The problem of roof cleaning due to growth of microorganisms like Algae and Moss is a recurring one, to be able to solve this it is important to understand what actually is causing them to grow. Although both Moss and Algae can be classified as microorganisms, but the method of prevention and removal is slightly different.
What are Algae?
Black streaks and discolorations on your roof which is usually misinterpreted as Moss is actually Algae. These organisms utilize moisture in the atmosphere hence are a menace in humid and coastal regions. Dwelling on moisture, these streaks initiate as black spots that grow into streaks later, and by the time owner becomes aware they had been growing for months. These pigments can be carried away be heavy wind gust or flying animal resulting in neighboring houses to be affected by algae as well.
What is Moss?
Unlike plants that require their root system to obtain water, Moss uses their leave to do this. Hence for them to grow using their leaves, they are in need of a moist environment for survival. Less exposure to sunlight, shade from overhanging branches aid to the damp conditions and dropped debris from trees act as a food source. Like algae, moss can also be carried away by winds affecting roofs of neighboring houses, but unlike algae, moss can detrimental to roofs.
Moss can cause the leading edges of the shingles to lift or curl, which increases the risk of shingle blow-off during wind events. In severe cases, moss build-up can cause lateral water movement resulting in moisture damage to the roof deck or may even cause leaks.
Cleaning these microorganisms can be most effectively be achieved by rigorous application of a liquid created in a proportion of 50:50 mix of laundry strength liquid chlorine bleach and water. Application is advised to done using a spray, solutions to be left on the roof surface for at least 20 minutes. For that rinse with low pressure water, at times it might be necessary to let the mixture on the roof surface for a time period gather than 20 minutes, depending on the condition of the roof. But to make sure that the mixture doesn’t dry out completely since that will make the rinsing process ineffective.
Although the procedure might seem simple and pretty direct, but experience is essential especially while determining the duration for which the mixture has left to dwell on the roof surface. In addition to this, working at height is never easy and chlorine bleach can be dangerous, so it is advised to call on the experts who have the proper experience and proper equipment. Charlotte Roofing | evergreenroofingcharlotte.com have experienced workers who can get you rid of this menace. Algae will disappear and w ash away with subsequent rains. Moss will loosen over time and may be removed with a leaf blower. As this will cause granule loss and very likely premature failure of the roof system.